In cnidarians, the mouth of both the medusa and polyp form opens into an internal _____ where _____ digestion takes place.

Answer:

  Live; carries.

Explanation:

  The verbs used in the sentence are in the present simple tense.

  Live goes because men and women could be replaced by "they", while a rocket or a shuttle could be replaced by "it" and if you use the third person of the singular, "he", "she", or "it", you must add "s", "es" or "ies" at the end of the verb.

  I hope this answer helps you.

Keystone species are species (plants or animals) that has a superfluous large influence on the ecosystem in which they reside. Keystone species perform an important role in maintaining the local biodiversity of an ecological community. They control the population of an ecosystem by determining the numbers, and types of others species in a habitat. They also affect many other species by providing important resources. Examples of key stone species are the wolf, jaguar, and the sea otters.

Keystone species have a profound impact on ecosystems, exerting a disproportionate influence on their structure and function.

Keystone species play a critical role in maintaining the structure and function of an ecosystem. Their presence and activities maintain biodiversity by providing resources and creating habitats for a multitude of organisms. Through trophic regulation, they control the abundance and behavior of other species, ensuring a balanced food web. Keystone species also modify habitats, shaping the physical environment and benefiting various organisms.

They can influence nutrient cycling and ecosystem processes, contributing to the overall health and resilience of the ecosystem.

Therefore, keystone species play a vital role in maintaining the stability, diversity, and functioning of ecosystems.

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Final answer:

Actin is a protein composed of globular molecules that polymerize to form microfilaments and are instrumental in muscle contraction. It also forms a part of the cell's cytoskeleton and comes in monomeric (G-actin) and polymeric (F-actin) forms.

Explanation:

The substance described in the question is composed of multiple globular molecules polymerized to form long chains or filaments. Among the options provided, actin is the correct answer. Actin is a globular multi-functional protein that forms microfilaments. It exists both as free monomers called G-actin and as a linear polymer called F-actin, which is part of the cytoskeleton in eukaryotic cells and plays a crucial role in muscle contraction as thin filaments.

Actin filaments, along with myosin, facilitate muscle contraction. Myosin interacts with actin filaments during muscle contraction when binding sites on actin are exposed. Tropomyosin and troponin are regulatory proteins that bind to actin filaments and manage the interaction with myosin heads.

An example of an acute bacterial infection is prostatitis with sudden, severe onset accompanied by fever, chills, dysuria, and hematuria.

To add, acute infection of the prostate gland that causes pelvic pain and urinary tract symptoms, such as dysuria, urinary frequency, and urinary retention, and may lead to systemic symptoms, such as fevers, chills, nausea, emesis, and malaise is called acute bacterial prostatitis .

Smooth muscle is the tissue in the wall of the uterus that is required for labor contractions.

The tissue in the wall of the uterus that is required for labor contractions is smooth muscle.

Smooth muscle is a type of involuntary muscle that is found in the uterus, as well as in other organs in the body. It is responsible for producing the rhythmic contractions during labor.

These contractions help to push the baby out of the uterus and through the birth canal.

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The tissue in the wall of the uterus required for labor contractions is smooth muscle.

Smooth muscle, specifically found in the middle layer of the uterine wall known as the myometrium, is primarily responsible for labor contractions. During labor, the myometrial smooth muscle undergoes rhythmic, coordinated contractions that help push the baby through the birth canal. These contractions are powerful and sustained, playing a crucial role in the birthing process.

While skeletal muscle is found in other parts of the body, such as the limbs, it is not involved in the contractions of the uterus during labor. Stratified squamous epithelium is typically found in the outer layer of the skin or lining of body cavities, not in the uterine wall. Elastic cartilage is present in structures like the ears and the epiglottis but is not involved in uterine contractions. In the context of labor, it is the smooth muscle of the myometrium that is indispensable for the strong, coordinated contractions needed to deliver a baby.

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The two molecules produced in the light-dependent reactions of photosynthesis that are used in the Calvin cycle are ATP and NADPH, which store converted solar energy as chemical energy.

The molecules produced during the light-capturing reactions of photosynthesis that are used in the Calvin cycle are ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate). During the light-dependent reactions, which occur in the thylakoid membranes, chlorophyll absorbs solar energy and converts it into chemical energy stored in these molecules. The oxygen released in these reactions comes from the splitting of water. Then, in the Calvin cycle, which takes place in the stroma of the chloroplast, the stored energy in ATP and NADPH is used to convert carbon dioxide (CO₂) into GA3P (glyceraldehyde-3-phosphate), a precursor to carbohydrates like glucose.

The fungus belongs to the group Ascomycota of Fungi or the sac fungi.

Fungi are the eukaryotic, saprophytic organisms with their body made up of thin, theard-like structures called the hyphae. Many such interconnected hyphae are referred to as mycelium.

Group of fungi producing sac like structures are called the Ascomycota or sac fungi. During the process of sexual reproduction, they produce a large number of sacs called the asci. Each ascus contains around 8 ascospores produced during the meiosis. The asci is contained in a structure called the acsocarp with varying shapes. They exhibit heterotrophic mode of nutrition and obtain nutrition by secreting enzymes and decomposing dead and decaying materials. Thus, they are called the saprophytes.  Yeast and Candida are common examples of the group Ascomycota.

Answer:

Optic nerve transmit information from the both eyes visual field of the right cerebral hemisphere to the left cerebral hemisphere.

Explanation:

Optic nerve transmit information from the both eyes visual field of the right cerebral hemisphere to the left cerebral hemisphere. The optical nerve is the nerve that transmits visual information from retina to the brain.

Optical nerves is made up of retinal ganglion cell axons glial cells.The image in the eyes is transmitted to the brain along the optic nerve. About 90% of the axons in the optic nerve go to the lateral ganiculate nucleus in the thallamus.

The optic nerves begins from the optic disk which forms from the convergence of ganglion cell fibres(called axons) as they pass out of the eye.      

Dermal ridges are another characteristic of specific regions of the papillary layer. The epidermis above develops ridges called epidermal ridges as a result of these ridges.

Human fingerprints are intricate, essentially one-of-a-kind, challenging to change, and last for the duration of a person's lifetime.

The underlying dermal papillae (miniature, nipple-like projections of the uppermost layer of the dermis into the epidermis) are what give rise to these ridges.

We refer to those ridges as fingerprints, along with the sweating stains they leave behind.

Therefore, Fingerprints left on things we touch are associated with our dermal papillae.

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Meiosis, fertilization, and then mitosis are the correct order of processes that result in the formation and development of an embryo, hence option A is correct.

The stages of the formation of an embryo are firstly meiosis takes place, through which gamete formation occurs to create haploid cells, These haploid cells combine to fertilize and develop the zygote.

After fertilization this zygote process through mitosis, in which all the cells go through equational division to further develop the embryo, fertilization, then cleavage, blastula formation, gastrulation, and neurulation.

Developing embryos go through several divisions to produce adults, cell division made all the body parts of the organism.

Therefore,  meiosis → fertilization → mitosis is the correct option.

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The given question is incomplete, so the most probable complete question is,

Which sequence represents the correct order of processes that result in the formation and development of an embryo?

A. meiosis → fertilization → mitosis

B.mitosis → fertilization → meiosis

C.fertilization → meiosis → mitosis

D.fertilization → mitosis → meiosis